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Патент USA US3088552

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May 7, 1963
c. E. JOHNSON ETAL
3,088,542
PIVOTALLY CONNECTED AND SECTIONALIZED FIRE CHUTE ARRANGEMENT
Original Filed Oct. 5, 1959
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INVENTORS
68
6‘. Elmer Johnson
Frederic/r C. K/fnge/hofer
BY Mm
72%
ATTORNEY
May 7, 1963
c. E. JOHNSON ETAL
3,088,542
PIVOTALLY CONNECTED AND SECTIONALIZED FIRE CHUTE ARRANGEMENT
Original Filed Oct. 5, 1959
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INVENTORS
6‘. E/mer Johnson
radar/bk C. K/fnge/hofer
BY
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May 7, 1953
c. E. JOHNSON ETAL
3,088,542
PIVOTALLY CONNECTED AND SECTIONALIZED FIRE CHUTE ARRANGEMENT
Original Filed Oct. 5, 1959
4 Sheets-Sheet 3
INVENTORS
6‘. E/mer Johnson
Frederic/r C. lx’?nge/hofer
BY (040mb ?. ZM
ATTORNEY
May 7, 1963
c. E. JOHNSON ETAL
3,088,542
PIVOTALLY CONNECTED AND SECTIONALIZED FIRE CHUTE ARRANGEMENT
Original Filed Oct. 5, 1959
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61 E/mer Jo/mson
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Freo'en'ck C. K//'nge//10fer
BY Mam/v yam
ATTORNEY '
United States Patent 0 "
1
3,088,542
PIVOTALLY CGNNECTED AND SECTIONALIZED
FIRE CHUTE ARRANGEMENT
Clas Elmer Johnson and Frederick C. Klingelhofer, both
of 8622 Quentin Ave., Baltimore, Md.
Original application (Bet. 5, 1959, Ser. No. 844,574, new
Patent No. 3,027,966, dated Apr. 3, 1962. Divided
and this application Apr. 7, 1960, Ser. No. 20,619
2 Claims. (Cl. 182—48)
This invention relates generally to ?re escape apparatus,
and, more particularly, it pertains to a mobile, extendable
chute for rescuing trapped persons or small animals.
This patent application is a division of US. Letters Patent
No. 3,027,966, issued April 3, 1962, to- applicants for
“Fire Chute Arrangement.”
Many people are burned to death every year because
3,088,542
Patented May 7, 1963»v
2
A pair of jacks 24 and 26, shown in ‘detail in FIGS. 13
and 14, are secured in spaced relationship upon the bed
of a ?re truck vehicle 22. The jacks 24 and 26 are
pivotally attached to the chute ‘20' by means of stirrups 28.
By means of jack handles 30, the jacks 24 and 26 may be
individually raised or lowered. If the rearmost jack 24
is extended farther than the forward jack 26, the chute 20
is elevated at its end remote ‘from the vehicle .22.
Aided by movement of the vehicle 22, the chute 20 can
be maneuvered to upper windows of a burning building,
as shown. The person being rescued slides down within
the chute 20 to land upon an in?ated air mat ‘or resilient
cushion 32. From there, he eases himself to the ground
level by means of a secondary chute or guide 34 of heavy
15 fabric attached to the side of the vehicle 22.
A hinged plate 36, shown in FIG. 1, pivoting at one
end from‘ the body of the vehicle 22 supports the outer
of their reluctance to jump into a rescue net or descend
edge of the fabric of guide 34 land may also serve as a
a ?re ladder ‘from upper windows or roofs of buildings.
door for a stowage compartment 8-8, as shown in FIGS.
Often, when a ladder is raised to the trapped person, the 20 2 and 5.
latter is unable to use it because of enveloping ?ames
For stowage and transportation, the chute ‘20 is divided
from lower windows.
It is, therefore, an object of this invention to provide
a combined rescue chute and ladder for rescuing persons
from burning buildings.
Another object of this invention is to provide an articu
lated rescue chute tube which is readily stowed for porta
bility.
into a pluraltiy of segments 40, ‘42, and ‘44, as best shown
in FIG. 3. The terminal section or segment 40 is retained
in its stirrup 28, while the other segments 42 and 44 are
25 disposed to either side in cradles 46 and held in place by
quick-release toggle clamps and cables 48.
To provide ready sideward removable of the segments
42 and 44, the cradles 46 are cut away at the side and
Still another object of this invention is to provide a
removable chucks 50, shown in detail in FIG. 6, are used.
rigid segmented tube arrangement for use in ?re escape 30 A plurality of spring clasps 52, shown in ‘FIG. 4 engag
apparatus.
And another object of this invention is to provide a
telescopic rescue chute with a motor-driven extension
ing with an end ring or dog 54, join the mortised and
tenoned ends of the tube segments 40, 42, and 42, 44 into
a rigid assembly capable of supporting a ladder 60.
mechanism.
Rings 56 and hand rails 58 to make up the ladder 60
And yet another object of this invention is to provide 35 may be welded or riveted ‘directly to the tubing of the
a stowage arrangement for securing rescue chute seg
tube segments ‘40, 42, and 44, as shown in FIGS. 1, 2 and
ments in a vehicle for ready service.
3 and the orientation of the chute 2t} simultaneously posi—
These and other objects and attendant advantages of
tions the ladder 60‘ for most advantageous rescue work.
the invention will become more readily apparent and
FIG. 9 illustrates an alternative arrangement for articu
understood from the accompanying speci?cation and 40 lating the tube segments 40, 42, and 44. A platform 62
drawings in which:
is supported upon the jacks 24 and 26. The terminal tube
FIG. 1 is a perspective view of a mobile ?re rescue
chute and ladder combination in raised position adjacent
to a building for service;
FIG. 2 is a side elevation of the tire rescue chute and
ladder in stowed condition, with one tube segment being
removed for clarity;
FIG. 3 is a view taken in the direction of the arrows
3—3 of FIG. 2;
FIG. 4 is a detail view, partly in section, of a joint
segment 40 is stowed at one side of the platform 62, as
shown. The next tube segment 42 is joined to the terminal
tube segment 40‘ by means of a hinge 64. Another hinge
64 similarly joins the other end of tube segment 42 to
tube segment 44, as shown best in FIG. 10.
The steps of joining the tube segments 40, 42, and
44, for service are shown in FIGS. 11 and 12 in consecu
tive order. The tube segments 42 and 44 are manually
removed from the platform 62, and unfolded .and‘ swung
around until the clasps 52 engage wt-ih their dogs 54-, thus
5 is a cross-section taken along line 5-5 of
placing all segments in line, rigidly secured by the previ
illustrating one of the ‘opened secondary chutes;
ously mentioned mortise and tenon joints therebetween.
6 is a perspective drawing of a stowage chuck;
As shown in FIG. '12, the entire line of segments 40,
7 is a side view of an alternate segmented tube 55 4'2, and 44 making up the safety slide or chute 20 is then
securing clasp;
FIG.
FIG. 2
FIG.
FIG.
arrangement showing motor-driven telescopic extension
provisions therefor;
FIG. 8 is a detail drawing, partly in section, of a motor
pushed bodily rightward by a pair of hydraulic cylinders
66 to the center of the platform 62 which then may be
raised and canted to elevate the chute 20‘ for rescue service
drive for telescoping tubes;
as related.
FIG. 9 is a perspective drawing showing articulated
tubes in stowed position on an elevating stage or platform;
FIGS. 10, 11, and 12 are illustrative step- diagrams,
respectively, of the stowed, partly articulated, and ?nal
joining of tube segments of FIG. 9;
FIG. 13 is a detail drawing of an elevating hoist; and
rangement for stowing the tube segments 40', 42, and 44
may be employed. This alternate arrangement, illus
trated in FIGS. 7 and 8, has the added feature of length
extension of the chute 20. A plurality of chute tube seg
If the ladder feature is not required, a telescopic ar
ments 68 are arranged to telescope within each other in
sliding ?t.
FIG. 14 is a cross-section taken in the ‘direction of
A motor 70 is attached to each segment 68 and ar
the ‘arrows 14—14 of FIG. 13.
ranged
to drive a worm. gear 72 through a reduction gear
Referring now to FIG. 1 of the drawing, there is shown
generally therein a safety slide or chute 20. Chute 20 70 ing 74. A rack rail 76 on an adjacent segment 68 engages
this ‘worm gear 72 to extend the tube segments 68 from
is constructed of lightweight metal or composition tubing
each other as the motor 70 rotates. No clasp or other
having a smooth polished interior.
lock is required because the worm and rack arrangement
3,088,542
3
arranged to be mounted end to end to form a continuous
tube, and‘ means on said base for moving said continuous‘
tubular chute later-ally on said base.
is‘self-‘locking at any degree of extension. The various
parts of the apparatus are preferably made of lightweight
metal, such ‘as aluminum.
Obviously, many other modi?cations and variations of
the present invention are possible in the light of the above
teachings. It is, therefore; to ‘be understood that within
2. Apparatus as set forth in claim 1, provided with
means for positively locking adjacent pivotally connected
sections together as an integral unit.
the scope of the appended claims, the invention may be
References Cited in the ?le of this patent
practiced otherwise than as speci?cally described.
What is claimed is:
11. A pair of spaced independently operated elevating 10
jacks arranged to be mounted on an automotive type ve
hide, a substantially elongated shaped base mounted on
the top of said pair of spaced‘ jacks and arranged to be
canted by said spaced elevating jacks, a tubular chute posi~
tioned on top' of said base substantially parallel thereto
and formed of a plurality of pivotally connected sections
15
UNITED STATES PATENTS
139,416v
3461,5401
O’Brien ______________ __ May 27, 1873
Friborg ______________ __ Aug. 3, 1886
857,784
Bisset ______________ .. June 25, 1907
2,656,999‘
Ullberg ___________ __'___ Oct. 27, 1953
2,829,814
Warner _______ __-_. ____ .. Apr. 8, 1958
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